US4013594AExpiredUtility
Powdered cleaning composition of urea-formaldehyde
Est. expiryDec 17, 1991(expired)· nominal 20-yr term from priority
C11D 3/43C11D 3/0031C11D 3/3703
92
PatentIndex Score
66
Cited by
4
References
5
Claims
Abstract
A powdered cleaning composition particularly effective in removing soil from carpets comprising solid polymeric urea-formaldehyde particles of 10 to 105 microns in size and a solvent chosen from water, high boiling hydrocarbon or chlorinated hydrocarbon solvents, C 1 to C 4 aliphatic alcohols and mixtures of these.
Claims
exact text as granted — not AI-modifiedWe claim:
1. A powdered cleaning composition having a soil substantivity constant greater than 1.5 and consisting essentially of about 30 to 90% particulate polymeric ureaformaldehyde and about 10 to 70% fluid, the urea-formaldehyde having a particle size of about from 10 to 105 microns, an oil absorption value of no less than 90, fiber hardness and a bulk density of at least 0.2 g./cc., and the fluid consisting essentially of up to 100% water containing sufficient surfactant to give a surface tension of less than 40 dynes per centimeter and up to 100% of organic liquid selected from high boiling hydrocarbon solvents, tetrachloroethylene, methyl chloroform, 1,1,2-trichloro-1,2,2-trifluoroethane, an aliphatic alcohol containing from 1 to 4 carbon atoms, and mixtures of these.
2. A cleaning composition of claim 1 wherein the amount of particulate material is between about 50 and 75% and the amount of fluid is between about 25 and 50%.
3. A cleaning composition of claim 2 wherein the fluid contains about 7 parts water and about 3 parts organic liquid.
4. A cleaning composition of claim 1 further comprising about from 2 to 10% by weight of cationic antistatic agent.
5. A cleaning composition of claim 1 comprising about from 1 to 10% nonionic surfactant and about from 1 to 4% cationic surfactant.Join the waitlist — get patent alerts
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